[Ips-wgr] IPS Weekly Geo. Report (20 March 03)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 20 MARCH 2003, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (11 MARCH - 19 MARCH)
K indices are in UT (0-24). For conversion to local time:
AEST = UT + 10 hours; ACST = UT + 9.5 hours; AWST = UT + 8 hours
        Australian Region*              
 Date     K-INDICES    A               
 11 Mar   3233 2323   12     
 12 Mar   3222 2123    8     
 13 Mar   3333 3122   11    
 14 Mar   3343 4334   19    
 15 Mar   4344 4333   21    
 16 Mar   2334 4443   20    
 17 Mar   3443 4344   22    
 18 Mar   4444 4324   23    
 19 Mar   3332 2323   12    

*estimated from real time data

Elevated solar wind speed parameters due to an irregular-shaped 
geoeffective coronal hole were first observed overnight on 13 Mar.
Geomagnetic activity has been observed at steady, elevated levels 
since 14 Mar, declining to quiet to unsettled levels on 19 Mar. 
Activity may increase again briefly after 19 Mar due to the extent 
and shape of the coronal hole.

2. FORECAST (20 MARCH - 19 APRIL)
Disturbed Periods: 
25-26 Mar unsettled, chance active periods.
09-15 Apr unsettled to active, chance minor storm.

Best Quiet Periods: 
29 Mar - 07 Apr.


PLEASE NOTE:  
At this time of the solar cycle, space weather conditions 
are frequently determined by short timescale events, not 
able to be forecasted a week in advance. 

IPS Radio and Space Services      | email: asfc at ips.gov.au
PO Box 1386                       | WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA     | FTP: ftp://ftp.ips.gov.au 
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